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<meta property="og:description" content="一、tabbar切换不调用接口问题解决方案：页面加载使用onShow,每次加载均会执行，其余只执行一次，除非刷新页面，离开页面是onHide 二、textarea若不设置，默认字数上限140解决方案：&lt;textarea  maxlength&#x3D;&quot;-1&quot; &#x2F;&gt; 三、view强制换行word-warp: break-word; 四、不换行white-space: nowa">
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</head><body><div id="sidebar"><div id="menu-mask"></div><div id="sidebar-menus"><div class="avatar-img is-center"><img src="/shenmo/img/fluid.png" onerror="onerror=null;src='/img/friend_404.gif'" alt="avatar"/></div><div class="sidebar-site-data site-data is-center"><a href="/shenmo/archives/"><div class="headline">Articles</div><div class="length-num">19</div></a><a href="/shenmo/tags/"><div class="headline">Tags</div><div class="length-num">19</div></a><a href="/shenmo/categories/"><div class="headline">Categories</div><div class="length-num">17</div></a></div><hr class="custom-hr"/><div class="menus_items"><div class="menus_item"><a class="site-page" href="/shenmo/"><i class="fa-fw fas fa-home"></i><span> 首页</span></a></div><div class="menus_item"><a class="site-page" href="/shenmo/archives/"><i class="fa-fw fas fa-archive"></i><span> 归档</span></a></div><div class="menus_item"><a class="site-page" href="/shenmo/tags/"><i class="fa-fw fas fa-tags"></i><span> 标签</span></a></div><div 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13:45:04">2022-12-27</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">Updated</span><time class="post-meta-date-updated" datetime="2023-10-30T11:55:52.856Z" title="Updated 2023-10-30 19:55:52">2023-10-30</time></span><span class="post-meta-categories"><span class="post-meta-separator">|</span><i class="fas fa-inbox fa-fw post-meta-icon"></i><a class="post-meta-categories" href="/shenmo/categories/Echarts/">Echarts</a></span></div><div class="meta-secondline"><span class="post-meta-separator">|</span><span class="post-meta-pv-cv" id="" data-flag-title="uniapp问题合集"><i class="far fa-eye fa-fw post-meta-icon"></i><span class="post-meta-label">Post Views:</span><span id="busuanzi_value_page_pv"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div></header><main class="layout" id="content-inner"><div id="post"><article class="post-content" id="article-container"><h4 id="一、tabbar切换不调用接口问题"><a href="#一、tabbar切换不调用接口问题" class="headerlink" title="一、tabbar切换不调用接口问题"></a>一、tabbar切换不调用接口问题</h4><p>解决方案：页面加载使用onShow,每次加载均会执行，其余只执行一次，除非刷新页面，离开页面是onHide</p>
<h4 id="二、textarea若不设置，默认字数上限140"><a href="#二、textarea若不设置，默认字数上限140" class="headerlink" title="二、textarea若不设置，默认字数上限140"></a>二、textarea若不设置，默认字数上限140</h4><p>解决方案：<code>&lt;textarea  maxlength=&quot;-1&quot; /&gt;</code></p>
<h4 id="三、view强制换行"><a href="#三、view强制换行" class="headerlink" title="三、view强制换行"></a>三、view强制换行</h4><p>word-warp: break-word;</p>
<h4 id="四、不换行"><a href="#四、不换行" class="headerlink" title="四、不换行"></a>四、不换行</h4><p>white-space: nowarp;</p>
<h4 id="五、内容被底部导航遮挡"><a href="#五、内容被底部导航遮挡" class="headerlink" title="五、内容被底部导航遮挡"></a>五、内容被底部导航遮挡</h4><p>原因：uni-app 新增了2个css变量：–window-top 和 –window-bottom，如何设置底部bottom，系统会默认与tabbar重叠<br>解决方案：bottom:var(–window-bottom)<br>eg: padding-bottom: calc(var(–window-bottom) + 20px);</p>
<h4 id="六、scss使用"><a href="#六、scss使用" class="headerlink" title="六、scss使用"></a>六、scss使用</h4><p>uniapp内置了scss，全局样式属性在uni.scss文件中，页面中使用时 <code>&lt;style lang=&#39;scss&#39;&gt;</code>即可</p>
<h4 id="七、发送请求数据"><a href="#七、发送请求数据" class="headerlink" title="七、发送请求数据"></a>七、发送请求数据</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">uni.request(&#123;</span><br><span class="line">url:&#x27;&#x27;,</span><br><span class="line">data:&#x27;&#x27;,</span><br><span class="line">method:&#x27;&#x27;,</span><br><span class="line">sucess()&#123;&#125;</span><br><span class="line">&#125;)</span><br></pre></td></tr></table></figure>

<h4 id="八、设置全局变量"><a href="#八、设置全局变量" class="headerlink" title="八、设置全局变量"></a>八、设置全局变量</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">app.vue页面中设置getApp().globalData.xx</span><br></pre></td></tr></table></figure>

<h4 id="九、设置本地缓存"><a href="#九、设置本地缓存" class="headerlink" title="九、设置本地缓存"></a>九、设置本地缓存</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">uni.setStorageSync()</span><br><span class="line">uni.getStorageSync()</span><br><span class="line">uni.removeStorageSync()</span><br></pre></td></tr></table></figure>

<h4 id="十、跨页面传参"><a href="#十、跨页面传参" class="headerlink" title="十、跨页面传参"></a>十、跨页面传参</h4><p><code>url: &#39;/pages/info/info?data=&#39; + encodeURIComponent(JSON.stringify(data))     //发送数据</code><br><code>JSON.parse(decodeURIComponent(data.data))               //接收数据</code></p>
<h4 id="十一、外链跳转无法返回-web-view"><a href="#十一、外链跳转无法返回-web-view" class="headerlink" title="十一、外链跳转无法返回(web-view)"></a>十一、外链跳转无法返回(web-view)</h4><p>web-view 是一个 web 浏览器组件，可以用来承载网页的容器，会自动铺满整个页面（nvue 使用需要手动指定宽高）</p>
<p>新建webview页面</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">	&lt;view&gt;</span><br><span class="line">		&lt;web-view :webview-styles=&quot;webviewStyles&quot; :src=&quot;url&quot;&gt;&lt;/web-view&gt;</span><br><span class="line">	&lt;/view&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">	export default &#123;</span><br><span class="line">		data() &#123;</span><br><span class="line">			return &#123;</span><br><span class="line">                url: &#x27;https://uniapp.dcloud.io/static/web-view.html&#x27;,</span><br><span class="line">				webviewStyles: &#123;</span><br><span class="line">					progress: &#123;</span><br><span class="line">						color: &#x27;#FF3333&#x27;</span><br><span class="line">					&#125;</span><br><span class="line">				&#125;</span><br><span class="line">			&#125;</span><br><span class="line">		&#125;</span><br><span class="line">	&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style&gt;</span><br><span class="line"></span><br><span class="line">&lt;/style&gt;</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<p><a target="_blank" rel="noopener" href="https://uniapp.dcloud.net.cn/component/web-view.html">相关文档</a></p>
</article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta"><i class="fas fa-circle-user fa-fw"></i>Author: </span><span class="post-copyright-info"><a href="https://gitee.com/trial-street/shenmo.git">审陌</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta"><i class="fas fa-square-arrow-up-right fa-fw"></i>Link: </span><span class="post-copyright-info"><a href="https://gitee.com/trial-street/shenmo.git/2022/12/27/uniapp/">https://gitee.com/trial-street/shenmo.git/2022/12/27/uniapp/</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta"><i class="fas fa-circle-exclamation fa-fw"></i>Copyright Notice: </span><span class="post-copyright-info">All articles in this blog are licensed under <a target="_blank" rel="noopener" href="https://creativecommons.org/licenses/by-nc-sa/4.0/">CC BY-NC-SA 4.0</a> unless stating additionally.</span></div></div><div class="tag_share"><div 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fa-bullhorn fa-shake"></i><span>Announcement</span></div><div class="announcement_content">This is my Blog</div></div><div class="sticky_layout"><div class="card-widget" id="card-toc"><div class="item-headline"><i class="fas fa-stream"></i><span>Contents</span><span class="toc-percentage"></span></div><div class="toc-content"><ol class="toc"><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%B8%80%E3%80%81tabbar%E5%88%87%E6%8D%A2%E4%B8%8D%E8%B0%83%E7%94%A8%E6%8E%A5%E5%8F%A3%E9%97%AE%E9%A2%98"><span class="toc-number">1.</span> <span class="toc-text">一、tabbar切换不调用接口问题</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%BA%8C%E3%80%81textarea%E8%8B%A5%E4%B8%8D%E8%AE%BE%E7%BD%AE%EF%BC%8C%E9%BB%98%E8%AE%A4%E5%AD%97%E6%95%B0%E4%B8%8A%E9%99%90140"><span class="toc-number">2.</span> <span class="toc-text">二、textarea若不设置，默认字数上限140</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%B8%89%E3%80%81view%E5%BC%BA%E5%88%B6%E6%8D%A2%E8%A1%8C"><span class="toc-number">3.</span> <span class="toc-text">三、view强制换行</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E5%9B%9B%E3%80%81%E4%B8%8D%E6%8D%A2%E8%A1%8C"><span class="toc-number">4.</span> <span class="toc-text">四、不换行</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%BA%94%E3%80%81%E5%86%85%E5%AE%B9%E8%A2%AB%E5%BA%95%E9%83%A8%E5%AF%BC%E8%88%AA%E9%81%AE%E6%8C%A1"><span class="toc-number">5.</span> <span class="toc-text">五、内容被底部导航遮挡</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E5%85%AD%E3%80%81scss%E4%BD%BF%E7%94%A8"><span class="toc-number">6.</span> <span class="toc-text">六、scss使用</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%B8%83%E3%80%81%E5%8F%91%E9%80%81%E8%AF%B7%E6%B1%82%E6%95%B0%E6%8D%AE"><span class="toc-number">7.</span> <span class="toc-text">七、发送请求数据</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E5%85%AB%E3%80%81%E8%AE%BE%E7%BD%AE%E5%85%A8%E5%B1%80%E5%8F%98%E9%87%8F"><span class="toc-number">8.</span> <span class="toc-text">八、设置全局变量</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%B9%9D%E3%80%81%E8%AE%BE%E7%BD%AE%E6%9C%AC%E5%9C%B0%E7%BC%93%E5%AD%98"><span class="toc-number">9.</span> <span class="toc-text">九、设置本地缓存</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E5%8D%81%E3%80%81%E8%B7%A8%E9%A1%B5%E9%9D%A2%E4%BC%A0%E5%8F%82"><span class="toc-number">10.</span> <span class="toc-text">十、跨页面传参</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E5%8D%81%E4%B8%80%E3%80%81%E5%A4%96%E9%93%BE%E8%B7%B3%E8%BD%AC%E6%97%A0%E6%B3%95%E8%BF%94%E5%9B%9E-web-view"><span class="toc-number">11.</span> <span class="toc-text">十一、外链跳转无法返回(web-view)</span></a></li></ol></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas 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